How about a laser projector in a zippo?
I wish I had a 3D laser printer for this one, the second picture shows the complicated plastic insert that will hold all the gubbins.
I had to do it the hard way.
Step 1: The Parts List
- a block of 12.7mm (1/2") plastic sheet (or print it if you have the kit :)
- 2 off 1.5v phone vibrate motors
- Green laser module
- Acrylic mirror
- 3.7v li ion battery
- Magnet to hold lid closed
- on off switch
- oddments of brass for battery contacts
Step 2: Machining the Block
some of the parts were laid on to check they would all fit.
The motors had plastic cases which were removed to make more room.
Step 3: Machining the Block Part 2
I then tried it in the block and lit it up! This gave me the position for the first motor.
Step 4: Motor Mounts and Mirrors
Brass mounts were turned in the lathe.
Acrylic mirrors were turned up and drilled on a mandrel in the lathe.
The parts were then assembled and wired up.
Step 5: Machining the Block Part 3
Photos show the motor units fitted, third photo shows the magnet that holds the zippo lid closed.
Step 6: Assembly and Wiring Part 1
A small hole was then cut in the zippo case to access the switch.
Step 7: Assembly and Wiring Part 2
Thie first picture is the wiring diagram followed by the battery contacts.
picture 3 shows the wiring in progress
Step 8: Final Touches
Followed by the battery in place, picture also shows the plastic cover to protect the back of the motor.